Elliott ALGOL

Elliott ALGOL was an ALGOL 60 compiler for the Elliott803 computer. It was implemented by Tony Hoare and others.[1] It differed slightly from the reference version of Algol, particularly in the supported character set.[2] First released in February 1962, it is believed to be the first implementation of an ALGOL 60 compiler in a commercial context and was an unexpectedly popular product for the company.[3]